On Wed, Sep 2, 2026 at 14:29 Dan Cross <[email protected]> wrote: > On Wed, Sep 2, 2026 at 1:32 PM Edouard Klein <[email protected]> wrote: > > My understanding of the benefits is that by removing interrupts and > > context switching you gain a surprising amount of performance for > > userspace tasks, each of which gets a basically dedicated core from > > start to finish (with all its cache). Is that correct ? > > Approximately. It depends on the userspace program, of course, but > what it undeniably gets you is a reduction in the amount of _jitter_ > experienced by a particular core. This can lead to significantly lower > tail latency at the higher percentiles. If you have an application > that is particularly sensitive to latency, that may be significant. On > the other hand, if your program is bursty, it may be much less so. > > - Dan C.
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